CVE-2026-105311: high-severity vulnerability in Red Hat streams for Apache Kafka 2
Console-operator: streams for apache kafka console: cross-namespace kafkauser secret exfiltration via confused deputy
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.7epss 0.3%
The StreamsHub Console operator acts as a confused deputy: a Kubernetes tenant with permission to create a Console custom resource can set spec.kafkaClusters[].credentials.kafkaUser.namespace to any namespace. The operator, running with cluster-wide Secrets RBAC, reads the victim-namespace KafkaUser Secret (SASL credentials or TLS private keys) and writes the plaintext material into a Secret in the attacker's namespace. No same-namespace check or allowlist exists anywhere in the code path.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Affected products
Red Hat · streams for Apache Kafka 2Red Hat · streams for Apache Kafka 3Red Hat · StreamsHub Console for Apache Kafka®Related CVEs — Red Hat streams for Apache Kafka 2
In the same product, most dangerous first.
CVE-2026-96740MEDIUMStreamshub/console: console-operator: streams for apache kafka console: unfiltered kafka client properties → sa-token exfiltration via config.providersEPSS 0.4%CVE-2026-105312CRITICALConsole-operator: streams for apache kafka console: tenant-controlled container image on clusterrole-bound pod enables namespace-to-cluster privilege escalationEPSS 0.3%CVE-2026-105949HIGHCruise-control: streams for apache kafka cruise control: authentication bypass via extra path segment allows unauthenticated access to all admin endpointsEPSS 0.3%CVE-2026-105941HIGHKroxylicious-kms-provider-azure-key-vault-kms: streams for apache kafka kroxylicious: azure key vault ssrf exfiltrates bearer token via untrusted edek vaultnameEPSS 0.2%CVE-2026-118952MEDIUMKroxylicious-authorizer-acl: kroxylicious: acl prefix matching can bypass authorization rulesEPSS 0.2%